<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .contenter{
            width: 300px;
            margin: 0 auto;
            background-color: rgb(171, 255, 196);
        }
        a{
            font-size: 12px;
        }
    </style>
</head>
<body>
    <div class="contenter">
        <div class="box">:)添加成功</div>
        <a href="#">回到首页</a>
    </div>
</body>
</html>